Message ID | 20190305225331.1353-3-lukas.auer@aisec.fraunhofer.de |
---|---|
State | Superseded |
Delegated to: | Andes |
Headers | show |
Series | SMP support for RISC-V | expand |
On 3/5/19 2:54 PM, Lukas Auer wrote: > Import the supervisor binary interface (SBI) header file from Linux > (arch/riscv/include/asm/sbi.h). The last change to it was in commit > 6d60b6ee0c97 ("RISC-V: Device, timer, IRQs, and the SBI"). > > Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> > Reviewed-by: Anup Patel <anup.patel@wdc.com> > Reviewed-by: Bin Meng <bmeng.cn@gmail.com> > --- > > Changes in v2: None > > arch/riscv/include/asm/sbi.h | 94 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 94 insertions(+) > create mode 100644 arch/riscv/include/asm/sbi.h > > diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h > new file mode 100644 > index 0000000000..ced57defdd > --- /dev/null > +++ b/arch/riscv/include/asm/sbi.h > @@ -0,0 +1,94 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (C) 2015 Regents of the University of California > + * > + * Taken from Linux arch/riscv/include/asm/sbi.h > + */ > + > +#ifndef _ASM_RISCV_SBI_H > +#define _ASM_RISCV_SBI_H > + > +#include <linux/types.h> > + > +#define SBI_SET_TIMER 0 > +#define SBI_CONSOLE_PUTCHAR 1 > +#define SBI_CONSOLE_GETCHAR 2 > +#define SBI_CLEAR_IPI 3 > +#define SBI_SEND_IPI 4 > +#define SBI_REMOTE_FENCE_I 5 > +#define SBI_REMOTE_SFENCE_VMA 6 > +#define SBI_REMOTE_SFENCE_VMA_ASID 7 > +#define SBI_SHUTDOWN 8 > + > +#define SBI_CALL(which, arg0, arg1, arg2) ({ \ > + register uintptr_t a0 asm ("a0") = (uintptr_t)(arg0); \ > + register uintptr_t a1 asm ("a1") = (uintptr_t)(arg1); \ > + register uintptr_t a2 asm ("a2") = (uintptr_t)(arg2); \ > + register uintptr_t a7 asm ("a7") = (uintptr_t)(which); \ > + asm volatile ("ecall" \ > + : "+r" (a0) \ > + : "r" (a1), "r" (a2), "r" (a7) \ > + : "memory"); \ > + a0; \ > +}) > + > +/* Lazy implementations until SBI is finalized */ > +#define SBI_CALL_0(which) SBI_CALL(which, 0, 0, 0) > +#define SBI_CALL_1(which, arg0) SBI_CALL(which, arg0, 0, 0) > +#define SBI_CALL_2(which, arg0, arg1) SBI_CALL(which, arg0, arg1, 0) > + > +static inline void sbi_console_putchar(int ch) > +{ > + SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch); > +} > + > +static inline int sbi_console_getchar(void) > +{ > + return SBI_CALL_0(SBI_CONSOLE_GETCHAR); > +} > + > +static inline void sbi_set_timer(uint64_t stime_value) > +{ > +#if __riscv_xlen == 32 > + SBI_CALL_2(SBI_SET_TIMER, stime_value, stime_value >> 32); > +#else > + SBI_CALL_1(SBI_SET_TIMER, stime_value); > +#endif > +} > + > +static inline void sbi_shutdown(void) > +{ > + SBI_CALL_0(SBI_SHUTDOWN); > +} > + > +static inline void sbi_clear_ipi(void) > +{ > + SBI_CALL_0(SBI_CLEAR_IPI); > +} > + > +static inline void sbi_send_ipi(const unsigned long *hart_mask) > +{ > + SBI_CALL_1(SBI_SEND_IPI, hart_mask); > +} > + > +static inline void sbi_remote_fence_i(const unsigned long *hart_mask) > +{ > + SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask); > +} > + > +static inline void sbi_remote_sfence_vma(const unsigned long *hart_mask, > + unsigned long start, > + unsigned long size) > +{ > + SBI_CALL_1(SBI_REMOTE_SFENCE_VMA, hart_mask); > +} > + > +static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, > + unsigned long start, > + unsigned long size, > + unsigned long asid) > +{ > + SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask); > +} > + > +#endif > Reviewed-by: Atish Patra <atish.patra@wdc.com> Regards, Atish
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h new file mode 100644 index 0000000000..ced57defdd --- /dev/null +++ b/arch/riscv/include/asm/sbi.h @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2015 Regents of the University of California + * + * Taken from Linux arch/riscv/include/asm/sbi.h + */ + +#ifndef _ASM_RISCV_SBI_H +#define _ASM_RISCV_SBI_H + +#include <linux/types.h> + +#define SBI_SET_TIMER 0 +#define SBI_CONSOLE_PUTCHAR 1 +#define SBI_CONSOLE_GETCHAR 2 +#define SBI_CLEAR_IPI 3 +#define SBI_SEND_IPI 4 +#define SBI_REMOTE_FENCE_I 5 +#define SBI_REMOTE_SFENCE_VMA 6 +#define SBI_REMOTE_SFENCE_VMA_ASID 7 +#define SBI_SHUTDOWN 8 + +#define SBI_CALL(which, arg0, arg1, arg2) ({ \ + register uintptr_t a0 asm ("a0") = (uintptr_t)(arg0); \ + register uintptr_t a1 asm ("a1") = (uintptr_t)(arg1); \ + register uintptr_t a2 asm ("a2") = (uintptr_t)(arg2); \ + register uintptr_t a7 asm ("a7") = (uintptr_t)(which); \ + asm volatile ("ecall" \ + : "+r" (a0) \ + : "r" (a1), "r" (a2), "r" (a7) \ + : "memory"); \ + a0; \ +}) + +/* Lazy implementations until SBI is finalized */ +#define SBI_CALL_0(which) SBI_CALL(which, 0, 0, 0) +#define SBI_CALL_1(which, arg0) SBI_CALL(which, arg0, 0, 0) +#define SBI_CALL_2(which, arg0, arg1) SBI_CALL(which, arg0, arg1, 0) + +static inline void sbi_console_putchar(int ch) +{ + SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch); +} + +static inline int sbi_console_getchar(void) +{ + return SBI_CALL_0(SBI_CONSOLE_GETCHAR); +} + +static inline void sbi_set_timer(uint64_t stime_value) +{ +#if __riscv_xlen == 32 + SBI_CALL_2(SBI_SET_TIMER, stime_value, stime_value >> 32); +#else + SBI_CALL_1(SBI_SET_TIMER, stime_value); +#endif +} + +static inline void sbi_shutdown(void) +{ + SBI_CALL_0(SBI_SHUTDOWN); +} + +static inline void sbi_clear_ipi(void) +{ + SBI_CALL_0(SBI_CLEAR_IPI); +} + +static inline void sbi_send_ipi(const unsigned long *hart_mask) +{ + SBI_CALL_1(SBI_SEND_IPI, hart_mask); +} + +static inline void sbi_remote_fence_i(const unsigned long *hart_mask) +{ + SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask); +} + +static inline void sbi_remote_sfence_vma(const unsigned long *hart_mask, + unsigned long start, + unsigned long size) +{ + SBI_CALL_1(SBI_REMOTE_SFENCE_VMA, hart_mask); +} + +static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, + unsigned long start, + unsigned long size, + unsigned long asid) +{ + SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask); +} + +#endif